Quick-return pump-head gearing



`B. P.. lFALTIN. QUICK RETURN PUMP HEAD BEARING.

APPLICATION FILED NOVx I2, I9I9.

Patented Nov. 29, 1921.

2 SHEETS-SHEET I.

| III af IIII @5% @naar IIIIII www B. P. FALTIN.

QUICK RETURN PUMP HEADy GEARING. APPLICATION'FILED Nov.12 1919.

1,398,684, -PanteaNw 29, 19214'.

2 SHEETS-SHEET 2.

To all whom z't may concern.'

jio

UNITED STATES BEnNnnn P. FALTIN, or BAnEvrLLnrENNsvLyANIA. y

timex-,RETURN yPUMP-HEAD GEARING.

Be it known that I, BERNARD P. FALTiN, a citizen ofthe United States, residing at Bare'ville, in vthe count-y I o-f Lancaster Vand State of Pennsylvania, have invented certain new and useful Improvements in `Quick-Return PumpfHead -Gearing; and l vdo hereby declare the following 'to bea full, clear, and exact description :of the invention, such as will yenable others skilled yin the art to which it appertains toinake and use the same.

` The invention for which 'I seeka l'patent relates to aqreversing chan-ge gearing, par-V ticularly intended tobe applied to the pumphead-'gearing of dispensing pumps in which rotation of fthe ,opera-ting handle in one direetion,fas on the discharging 'or working stroke, imparts a relatively slow -mo-vement to the pump piston, and rotation' of the op- @rating handle inthe opposite direction, as on the idle stroke, imp-arts a relatively rapid return movement 'to the piston.

`I have designed my :mechanism with lpartic'ula-r reference to 'pumps used. at gasolene supplyxand sales stations, but it vwill be apparent that it is not llimited to such use 'bu is of very broad application.

My invention consists in general, of a reversible driving member, a driven member, differential speed-transmission devices lbe 1 tween the driving and driven members,l means for automatically clutching the lower ed to vvbe selectively interlocked with the" driving shaft. inv .order to be selectively` speedv differential transmission tothe driving member that is rendered effective by a movement of the driving member in one d irection, means for automatically clutching the higher speed differential transmission to the driving member, rendered effective by a movement of the driving member in the reverse direction, and a meansresponsive to' the clutch-engaging movement of the clutch yfor the higher' speed transmission, that-positively holds thebther clutch in disengaging or retracted position; vand'it vparticularly consists in the combination of a driving shaft having'thereon gearsof different sizes adaptdriven thereby, with a counter shaft having gears of different sizes rigidly mounted thereon, the selective interlocking,v devices being oppositely engaging, spring biased, one-way clutch members 'or pawls, and

means wherebythe oneway yclutch member' or pawl for the high speed driving gear,

when @leased will 'held -Clutcllmember l Specification of Letters Patent. Patented Application vfiled 4November 12, 1919.` Serial No. 337,511. i y

for the low .speedgdriving gearout of'enthan the drive shaft and inja .direction lto in.-

' terlock ywith its clutch on the drive shaft.

. invention also comprises certainde.- tails ,-more fully set forth inthe descriptive portion of this specification and illustrated in-t-he accompaying drawings.

Figure g1 is a plan'view of a pump head gearing embodying my invention.

Fig. 2 is a section on the line L -fd ".Of Eigl.' 1 ,Y j

v 3 'is 4a' perspective, partly in section, ofiv the high .and lo-W speed selective driving gears'separated, -and the bearing member for them on the driving shaft. '1

...'Fifg.. 754:, is .a section through thelbearing member` on the 4driving shaft.

gFig. 5 is an end elevation of Y shown in Fig. 4, but with a part ybroken away. f l

iijFig. :6 is an elevationiof the part shown in Eig. g4, viewedfrom a different angle.' f. L

the vmembei` .fl

.. Referring to the drawings forming apart i' ofthis applications f A designates the Yside plates ofr a frame work or housing for supporting aV gear mechanismembodying invention, B and C are stay-bolts ysecuring the side plates of the :frame worker housing together. Journaled in the said vsidefip'lates are two rotary"v shafts. 17-'and'21,fthe shaft 17 having one end `projecting"outside: the frame work and carrying a handf` cured to it; p. Y

The-'shaft 17 is the prime power shaft or driver, and carries" a small and a large gear crank'18, or Ithe "like, se y 15 and12', respectively, one'orthe other of which is adapted-to be turnedfby theshaft 17 dependent on the direction of rotation of saidY shaft. vrIix'edto the shaft 21,-w`hich is a driven'or 'counter shaft, are two driven'.

gear? wheels-QOand 19, 'of different sizes, the

largerdriven gearv 20 ntermeshing with the t: smaller driving gear.15,and the smaller driven gear 419 intel-meshing with the larger dri-v'-,V

ing gear/12. 1A; pump piston `roperating/rack 22isfin `mesh with the ,smaller driven gear 19.` The Y('x'n'istruction is such', as will be more specifically pointed Yout hereinafter, that4 rotation ofthe crank 18 and shaft 17, in' a clockwise "or right hand direction vwill automatically effect the interlocking of fthe small-'gear Wheel 1 5 f/lGvShaft 17,' and,

the shaft 21'and gear 19 inV counter-clock:`

wise or left hand direction, thereby elevat ing the rack 22 slowly and powerfully g` and 1 rotation of the crank 18 and shaft 17 in a counter clockwise direction will automatically effect the interlocking of the large gear wheel 12 and the drive shaft' 17, and this. will rotate the gear'lQ directly in a clockwise direction thereby lou ering the rack 22 quickly. f Y

I will now describe what I deem to be an important part of my invention, to wit, the mechanism whereby, in response to thezrotation of the driving shaft in one direction (the liquid discharging stroke of the piston) the low speed kgear 15 wll be automatically interlocked with said shaft, and in respense to its rotation in the opposite direc` tion (the idle or return stroke of the piston) the high speed gear 12 will be interlocked with said shaft.

Integral with, or securely fastened to the shaft 17, so as to turn therewith, is a cylindrical hub or bearing member 1l. This bearing member 11 has a slot 10 formed in it extending in a ldirection to one side ofl the center or on planes forming a lchord of the circumference ofthe saidbearing member.

As shown in the drawing, and as a'convenience in machining, merely, I may form the bearing member 11 with two central hubs and secure the. flat rings 13 land 14 thereover in order to close the ends of the slot 10, and formguiding surfaces for two pawls 2 and 3 which operate in the said slot. `The ring 14 is of sufficient width to form a flange extending circumferentially bcyondthe general cylindrical surface of the bearing member.V` At the bottom of the slot 10 are two boreholes 10. Each of thepawls 2 and 3vhas a reduced sha-iik adapted to enter respectively in one ofthe bore holes. The

shank ofthe pawl 2 is surrounded by za spiral compression spring 8, while the shank of the pawl 3 is surrounded by a similar compression spring 9, which is, however of greater strength. thanthe spring 8. These springs are seated in f the bore holes, and bear upon shoulders formed on the pawls at the shank junction and tend to pressthe pawlsoutward, the spring 9 pressing with Y greater force than the spring 8, as stated.

A. rock arm 4 ispivoted within the slot 10 on the pin 5. The two pawls 2 and 3 have cavities milled on their opposing edges, and ,theendsof vthe rocker arm 4 are seatedin said cavities. of such size and form thatA the endof the rocker larm thatAk co'perates therewith lits without lost motion, and no'movement of either pawl 3 or rocker arm 4'fcan take place without corresponding movement of the other. The cavity 2 in'pawl 2, however, is

of suchrsize and form as toprovide alost The cavity 3in the pawl 3 is motion connection between pawl 2 and the rocker` arm. .l\lormally, as. shown in Figs. 3, 4 and 5, the superior strength of spring vas compared with spring 8 will tendto maintain the pawl 3 in its projected position and the pawl 2 in its retracted position, the end of the rocker arm 5 that engages the pawl 2 'being then against the inner end of the lost-motion cavity in the side of the pawl 2. Should now anypressure be applied to the pawl 3 whereby` it is pressed inward, the end of rocker arm 5 that engages pawl 2 will be moved outward, andthe spring 8 vwill cause the pawl 2 tofollow,

with the pawl `3 forced inward the' pawl 2 1 lmay be freely pushed inward against spring tension to the limit permitted by the length of the cavity therein and when released said pawl 2 will spring outward again wholly independent of the pawl 3, and without imparting any motion to said pawl 3.A Under the last named conditions, in'other words, pawl 2 acts asanjordinary spring pressed pawl.

The outer end of pawl 3 is'beveled in the same manner as` anordinary latch-bolt, whereas I prefer to form .the end of awl 2 square,.as shown in the drawings, t e end lying ina plane atf right `angles to its sides and edges. The ,proportions and limits of movement of said pawl 2 are such that, when retracted, as itis 'when the pawl 3 is projected, the end face of said pawl 2-is wholly witlif in the perimeter ofthe bearing member :11;

but when projected the rearward corner isA fluslirwith'the perimetcr'or does not "project beyond it, while ,the front or. ratchet-engaging corner standswellout from the perimeter.' The guiding slot 10, lying, as it does,

in planes `parallelfwith butspacedfrom a diametrical planeppermits of this vconstruction. The described form of pawl 2 is important as this-form is that vof greatest strength,'and the pawl 2 bears` the strain .of theload on the pumping strokes.

The large driving gear12 is of annular Y images;

ting "over ithe' bearing yz-inexnber .11,'and ,hawing a notch andzvra'tchet shoulder-716,- @right angular'fn section, 'andea counteripartf'o'f the engaging end-ol .pawlf with which'ait coperates. The gear *1"5, with iits h'ub 316,

v is adapted to vrotate `freely ion fthe `member los7 speed gear 115- untilfit*registersewiththe notch and ratchet shoulder 16', ailier which gear l5 will^rotate'.pivfzsi`` vrelywith thefgowef shaft "17 and 'as :gear-1 flfmeshes with ylavi-,ger gear :2,0 secured .for formed -ionr'counter KA"shaft 2l, :thatshatwith thewamxedn-gears will rotate c@untereeloelmisek or deftv handedly. Thefgea-r '19, meshing with'ihefraok 22::Wifll elevate the latter- *w'ith' .a relatively slow movement and thus effect', inrthe use'f-for which lI have 'designed this apparatus; ,fa slow and powerful liquid delivering rstroke. Meantime the gear 12'W1'lielickroverdhe pawl 3f, rotating .at this Ytime slowly onfnthe bearing 11 and :in th'eflsanne direcf'i tion; v "in L f' Having completed 'the slowipwaadfworleingy stroke of rthe rack 22,f the operator ithenf reVerSesthe motion of ithe '-crank A'in .order to lower the v.rack Lto the positionx'forsstartf; inggthe fneXt Working stroke, .this downward:

stroke being the idle one, which it isidesirable to "effect 'quick-1y.A In" :the .reverseior counterfclockwise rotation. 'iofrt'he' '.shaft 1.7,l the paWll2 will be immediately'pressed back and kslip around within y'thelihuh 16 ofgear5 l5.` As soon as :pa-W13; comes Ainto :l'egistliz:-

will vsnap intozengagement fthenewith'nndeif thel influence fo'ffthefs'trong -spring"l-9,and thereafterk carry ithe gear 'i2 :around-with" the shaft 17 as longasxreversefxntaton Y said shaft "cgmtinuesx` Assoon'fasthelipawl 3 `is projected .outward by its spring/Batlle rocker arm 4 `will Yengagey the `inner der-oitv the lateral lcavity ovpanil 2 reason of :the "preponderancefef streng-thai spring 9 over that of spring 187,' ,willhold the ratchet shoulder .6 las 'the gea-B15 trims rapidly 'relatively r reto.' 4fthe bearing* 1'1 land* overl-'Luis :said penal- 2,1y Large 'gealf Whelz 121zbeing now rotated rin I wth'zsmall -rarh-engag'inggear 9, which fis new turning :in :a clockwise directing-will Obviously :rim the .1ark 'et 1 Speed accelerated over themfitapeeafees Y hi `irarcl- *movemenn' lalthough `:the Aspeed withL l'the 'operator `turnsgft-l1e..crank alias not lheenVVV changed.'A ...that the lhigh speed fgears l2 andy lQfhavega rratio fof 2 to '1, ,and f'thelow speed gears il-and' 20 have .a ratio of flfjto 2,' it `wfill'loe obvousvtha't With-the same vspeed of 'handlein 'both Vdif rections the rackz22 AWiill'be returned on lits idle stroke :at a speed lfour times zthat A'with which is ffelevatedionits Working stroke.-

load lof :the rack :and A,its connected parts v andthe normal africti'onof .theimovlngparts s will obviously afford :sulcient yresistance V'to ,prneventzthe i-'gears `i112 and y15 from :moving with; fs'haft '17 :and bearing :member L11 .The `for automatically holding thepawl' 'retrahted when vthe 4pawl l3 -Is enf .gagefrl *with 'the lhighspeed gear 12 :but :allow when the ipawlf-.F iis retracted, :whereby .locking ofthe :gearsfisprenented 'during the aspeedareturnincitement;:andlthefsquare d' fpawlzlgjor rinterloeking with 'the flow l.SpeedLdriving gear-when -it :actsas a; 'driven lii gits particular relation to the cooperating parte; are. deemed Yvaluable features f ,of y my invention.' 5f: t "I eWere'V itnot.;fortherockerfairm staand the lostlfmutionacatcity tin `t-lieeilge yof pawl 2-v Wiith which one lendxof the; rocker farm enga lS5 itis apparent that/:thefgearinglwould loc during `the'irefverse for :high :speed vreturn movement, "rheeause 'iatyithat v:time the" low speedfgear1'5 is rotating on'fthe bearing 1l at fa considerably higher *speed `,than said'y bearing andin'vthe same direction, Which-fis? suchl jas to-acaulse the driving side of @the vpawlv 2, Vto `interlock V.with the, :shoulder 6 `as soon asfthe two register. .By Ad islgzosifngthe slot` 10. in @the bearing member 5,11 .inthe relative position shown Ifamenaibled 'to give :the pand-'52, iv-which 'carries the 4hemfier load, great Stnengthwby the construction shown. The

other palwl carnyingf'aflighter load need l not :he-:ofr schlstrength; therefore I bevel .e

its -en damd vseatnit :ini the vsaine slotglO yas' thatfnf whichA the. pawl .2` vr1s seated., ,and this v lafszstructure 1 ecorronneal to lmanufaes`.

, Byproper@designingzthe speedgratiosiof; 7^ the change speed gearifng7 Aany .desirable dif--k f erence .olf speed' on itsupward :and ,down-f, Ward-movements jmay abe imparted, Without possibility :ofwlocking the gearing-omits, quickureturn rmoveinent'. 1It iis 'posisble `to Aso design ,these :ratiosthatV ...the .pawl'seannot b oth register with the lratchet shoulders. gf the ,arsjatrtheffsamemoment. l

tersflatentis the. following:y

'f Ji., .The enmbfnation rof- @a vrrevel;,Sibl'e mgy 'draven mmher, differential f aningthus fdeseihedfmy inerention.what` I Irlaim'ca sgI-ievsr and desire to:se/eurev by.' Let-l transmission vmeans between 'the ldriving and the driven member, anautomatic clutchingl device .comprising a part that moves,Av responsive to the moivementzof the driving member in one direction to couplethe lower speed element of the transmission to-said driving member, another automatic clutching device comprisir'ig a *partthat moves. responsive to the reverse' movement of the driving member to` couple the higher Yspeed element of the-transmission to said driving member, i the said parts being vmovable fwith respect to eachl othe'rfand a means .operating in response to thereverse movement of the reversible drivingvmember for holding the clutching device -for the klow speed mechanism in an inoperative position. -f

2. The combination of a reversible'driving member, a driven member, differential tr-ansmission means between the driving and the driven member, an automatic clutching device responsive to the movement of the driving member vinfone direction to couple the lower speed element of the transmissiont6 said driving member, `another. .automatic clutching device responsive-ton theireverse movement vof the driving` member' to@ couple the higher speed element ofthe transmission to said driving member, and a meansire-7 spondi-ng to theA movement of the highspeed clutching` device into its clutching position during said reverse movement, for holding the clutching device for thelow .speed mech- ;y

anism in an inoperative position. wi ,Y .i 3. The combination of a reversible driving shaft, a counterfshaft having two gears Se. cured thereon-,differential gears on'the driv: ing shaft, one-ways clutch` devices respectively arranged to-drive in opposite-direc tions, one clutch device adaptedfto drive' al low speed gear andthe other-a1 high speed' gear ofthe said differentialgears, means to bias both ,clutchA devicesy into positivonf-to "en-j gage both-f said Slow and high'speed gears,

and a -means, responsive to the-'engagmgmovement of the clutch 'device 'forthe high` speed gear, for holding theclutchV device for the lowispeed gear in inoperative position. 'i v 4, The combination'of a reversible driving shaft, a counter shaft, a variable speed gear-- ing connecting the driving shaft and counter shaft comprising two gears of different sizes secure on Vthe counterf'shaft and two gears of different sizes revoluble on the drivingshaft but adapted to be clutched thereto, :andin -mesh withv the'gears on the'counter shaft,a

one-wayl clutch device biased toward clutchthe bias of the-clutch for the largergear being the stronger, and means responding .to

the engaging movement of the: clutch devicefor thelarger gear, QrhOlding--he 'Clutch'v devicefor Athe smaller. gear in yinoperative position, said-means-including a lostV motion connection effective `when thevlarger gear clutch device is in inoperative position, to permit the other'to operateindependently. v5. In avariable speed reversing gearing, two shafts', differential gearing connecting them, comprising two differently sized gears upon one shaft; one adapted to be `rotated in onefdirectionandthe other in the opposite direction,two one-'way acting, spring-pressed clutch mechanisms/for effecting suchv rota-l tions, -and means whereby,l the clutch mechanismA for-the small vgear may beheld in-inoperative position while the other is in operative. osition. i p i 6. reversely` lrota-table shaft, a Apair of bodies'rotatable thereon, two oppositely facing springipressed'pawls seated'on the shaft, the spring of one being stronger than that ofthe other, a ratchetshoulder on each body adapted to engage one of said pawls, 'afdeviceA for transmitting the engaging movement of the rpawl with the stronger springfto the pawl having'the weaker spring, and a lost motion connectionV between said-trans'- mitting device andy said" spawl with the weakerspring, ywhereby when said pawlwith the stronger springfisretracted the vother pawl is-free tor'atchet.v l c 'l LA reverselyrotatable lshaft,fa pai-rof bodies rotatablelthereon, two oppositely .facing spring pressed pawls seated on` said shaft, the'springof. one being stronger than that of the other, ia. -ratchet shoulder onf `each body adaptedV to engage axpawl, aV rocker memberextending betweenV the zpawls, ,and having alost motion connection with-one of themf 8f A reversely rotatable shaft 'having guidii'ig-seatsextendingin planes cutting the shaft at one-side of'its center, oppo'sitely facing automatic clutching devices guidedl in. saidseats, `apair of bodies rotatable on the shaft but eachv of whichi'is adapted 1to;.be clutchedy theretdby-l one orfthe other ofthe clutching devices according Ito. the direction of rotation of the shaft,-one' of said-.clutch-l ing devices vhavingaright angled. end and the other-having-abeveledend.

9. In ati-differential reverse gearing, a rotatablefshaft, Aanenlarged bearingfmember' lOpIn aidifferential reverse gearing a ro-` tatable "shaft," f an enlarged bearing rmember" thereon having a paWl-carryingaSlOt, pawls seatedl in the slot,a gear ring sleevediin they bearing member and adaptedto be engaged* byv one pawl, a 'gearisleeve'd upon thesh'aft and v'having 'a i lateral lhub sleeved upon the bearingjmember, and adapted to be engaged bythe other'pewlw v 11. The combination of a reversible driving member, a driven member, differential transmission means between them,l oppositely facing, one way automatic clutches including two relatively movable members adapted to connect the driving member with a high or low speed member of the dierential transmission means, and means whereb-y to interrupt the automatic action of the clutch for the low speed transmission during Y operative engagement of the clutch for the high speed transmission.

l2. A quick return mechanism comprising a driving member, a reversible driven member, two variable speed membersoperatively connected tothe driven member, two spring n pressed clutch elements on the driving member arranged to engage'said variable speed members, respectively, to drive them in opposite directions, and meansA whereby the clutch element that engages the low speed member of the variable speed members is held out of engagement in response to the movement of the other clutch element into engaging position. v

In testimony whereof 1 aiiiX my signature.

BERNARD P. FALTIN. 

